<!DOCTYPE html>
<html>
<head>
    <title>{% block title %}Default title{% end %}</title>
</head>
<body>
    <h2>Please sing in.</h2>
    <form method="post" action="/test/user">
        <p>Name:<br><input type="text" name="username"></p>
        <p>Email:<br><input type="text" name="email"></p>
        <p>Website:<br><input type="text" name="website"></p>
        <p>Language:<br><input type="text" name="language"></p>
        <input type="submit" value="ok,submit my information">
    </form>
    {% block student %} {% end %}
    <h3>test upload file</h3>
    <input id="fileInput" type="file" value="choose file">
    <button id="uploadBtn">upload</button>
</body>
{% block script %} {% end %}
</html>